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ON
BOARD QUANTITY (OBQ): All the oil, water, sludge and sediment in
the cargo and associated lines and pumps on a ship before loading a cargo
commence. (this term may not apply to product movement).
QUANTITY
REMAINING ON BOARD (ROB): All the oil, water, sludge and
sediment in the cargo tanks and associated lines and pumps on a ship after
discharging a cargo has been completed, excluding vapour but including
clingage. (this term may not apply to product movements)
Determine
the OBQ/ROB for Liquids as follows:
(1)
By measurement determine the depth of liquid in each tank.
Measure-ments should be taken at as many points as possible to ascertain if the
liquid covers the tank bottom.
(2)
Where there is a sufficient depth of liquid determine its
temperature....
